Sloan A-1001-A Regal Water Closet Diaphragm Rebuild Performance Kit

In this review the Sloan A-1001-A Regal Water Closet Diaphragm Rebuild Performance Kit is assessed as a targeted repair solution for facilities running Sloan Regal flushometers at 4.5 GPF. The bottom line: it is for maintenance techs and facility managers who want a straightforward OEM rebuild that restores proper flush performance while reducing wasted water. The kit includes the necessary diaphragm assemblies and parts that address worn seals and flow problems, and it is notable for being a genuine Sloan part designed specifically to limit overflush and maintain consistent operation.

Key Features

• Diaphragm performance kit: Contains the core components required to rebuild a Regal 4.5 GPF water closet flushometer so the job can be completed without sourcing separate parts.
• Intelligent design: The diaphragm assemblies are engineered to control water consumption, helping to prevent overflush and reduce utility costs when installed correctly.
• Chloramine resistant: Components are specified to resist common water treatment chemicals so they last longer in treated municipal water.
• OEM compatibility: Designed specifically for Sloan Regal flushometers to ensure fit and function without modification or improvisation.
• Extend equipment life: Using Sloan genuine parts helps maintain factory performance and reduces the frequency of future repairs compared with nonOEM replacements.

Who It's For

The kit is best for building maintenance staff, plumbing contractors, and facility managers who service commercial restrooms with Sloan Regal flushometers set to 4.5 GPF and who prefer OEM parts for reliable, repeatable repairs. It suits locations where preserving water efficiency and predictable flush quality are priorities.

It is less appropriate for owners of nonRegal models, flushometers set to different gallon-per-flush rates, or do-it-yourselfers who need generic parts; those users should confirm compatibility or look for kits matched to their specific valve family.

Pros & Cons

Pros

• Includes all main components for a complete diaphragm rebuild, simplifying parts procurement.
• Designed to control water consumption, which helps maintain consistent flush volumes and reduce waste.
• Genuine Sloan parts improve longevity and reduce mismatch risks compared with aftermarket options.
• Chloramine resistance supports longer life in treated water systems.

Cons

• Some users report occasional leakage after installation, indicating careful fitting and inspection are still required.
• Not universal; strictly intended for Regal flushometers at 4.5 GPF, so compatibility must be confirmed before purchase.

Specifications

Product type	Diaphragm rebuild performance kit
Intended flush rate	4.5 GPF
Compatible with	Regal flushometers (Sloan Regal line)
Parts included	Diaphragm assemblies and necessary rebuild components
Material feature	Chloramine resistant components
Part origin	Sloan genuine parts (OEM)

Our Verdict

The Sloan A-1001-A kit is a practical, value-minded choice for maintenance professionals who need a reliable OEM rebuild for a Regal 4.5 GPF flushometer. It restores intended flush performance, supports water conservation goals, and reduces the chance of future service when installed correctly; just confirm compatibility and inspect seals closely during installation to avoid occasional leakage reports.

Frequently Asked Questions

Will this kit work on non-Regal Sloan flushometers?
The kit is designed specifically for Regal models at 4.5 GPF; it should not be assumed compatible with other Sloan families without verification.

Does the kit resist treated water chemicals?
Yes, the components are specified as chloramine resistant to improve longevity in treated municipal water systems.

Are all replacement parts included?
The kit includes the necessary diaphragm assemblies and core rebuild components for a full rebuild of a Regal 4.5 GPF water closet flushometer.